Iris & Lilly by Wolford Black Lace 20 Denier Stay-Ups Black New. 2 Pairs in a pack Medium size - see photo of official sizing to confirm fit. Manufacturer information: Knitted with soft, double-covered elastane for flexibility, durability and comfort Designed with discreet silicone strips to hold stockings in place, for maximum hold keep the skin lotion and powder free 89% Polyimide, 11% Elastane Machine Wash, Cold Finished with a discreetly reinforced toe for durable day-long wear Designed and manufactured by Wolford